Autographic camera.



A. S. SPIEGEL.

AUTOGRAPHIC CAMERA.

APPLICATION FILED DEC.2.1914.

1 ,270,983. Patented July 2, 1918.

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ALEXANDER S. SPIEGEL, OF CHICAGO, ILLINOIS.

AUTOGRAPHIC CAMERA.

Specification of Letters Patent.

Patented July2, 1918.

Application filed December 2, 1914. Serial No. 875,163.

To all whom it may concern:

Be it known that I, ALEX NDER S. SPIE- GEL, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Autographic Cameras, of which the following is a specification.

My present invention relates to improvements in what are well known as autographic cameras, or those in which a'record may be made on a film at or about the time of exposure, of the subject, or any other desirable data.

In devising this invention, I have aimed to provide a construction which will enable time and place,

the ordinary film to be used, and which willnot interfere with the camera being loaded or unloaded by day-light. ,I have alsoaimed to provide for the writing or marking being done in bright day-light and in such a manner that it is not necessary to expose the written portion in order to make a record of the writing.

With these and other objects in view, which will appear more fully in the following specification, the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined in the appended claims.

I have illustrated an embodiment of'my invention in the accompanying drawing, in which,

Figure 1 is a plan view of the back of a m camera. I Fig. 2 is a transverse sectional view.

Fig. 3 is a transverse section taken along the line of opening 2.

Fig. l is a sectional detail.

' Fig. 5 is a perspective detail of a modification.

Referring by reference characters to these drawings the numeral 1 designates a film camera of the ordinary or any de sired form. In the back of the camera and at a suitable point, the location of which depends somewhat upon the portion of the film where it is desirable to have the marking occur, I provide an opening, preferably in the form of an elongated slot, as shown be closed, by a at 2 which may normally hinged cover 3. Within the back and in line with this opening, I provide a holder 4 for supporting a marking surface, which may be a carbon or like transfer surface,

face and overturned and also to hold I points directly posure opening,

which latter.

which is indicated at 5. The holder 4 is supported by suitable brackets from the back of the cameraat the ends of the slot so that the film 6 and black paper 7 can be carried through between the marking surface and the slot or opening 2 in their passage fromv one roll to the other. The bottom of the holder 4* is formed as a plane flat surface for supporting the marking surportions or clips 4* are provided to engage the side edges of the said marking surface and hold it in position the surface of the film normally out of contact with said surface. Spring packing strips may be also provided on theba'ck of the camera adjacent to the slot or opening as indicated at 8 to prevent the lightwhich passes into the slot or opening from reaching the interior of the camera. With a construction as above described, and using a carbon sheet for the marking surface, in order to write upon or mark a film for identification purposes, it is only necessary before exposing the film to open the hinged cover and write upon the back of the black paper with a hard pencil or stylus. As the black paper and film are both flexible, the pressure of the pencil or stylus will cause the carbon to adhere to the gelatinous coating of the film at those opposite to where the pencil or stylus bears. Thus the mere writing upon the back ofthe black paper with a sharp pointedinstrument will cause the written matter-to appear in black carbon characters on the sensitive surface and if the film be thereafter moved to carry the portion bearing the carbon into range of the exthis carbon will upon the subsequent exposure of the film prevent the light from acting on the film, the carbon marks being opaque,

In this form of my invention. it is necessary that the marks or writing should be made upon the film before it is moved to exposure'position, and that it should after the writing he moved sufiiciently to carry thewritten portion from over the carbon surface and into position to receive the light passing through the lens. The carbon will of course, be washed off by the developer,

acting on the underlying unexposed sensitive surface. will cause this portion to contrast with the surrounding portions of the sensitive surface which have been exposed to 'the light. In other words, the markings will appear light on the film and black on the photographic prints.

The writing slot or window ma be conveniently placed opposite the framework which holds the bellows.

Instead :ofusing carbon paper, Imay use a chemically prepared paper which will leave a dark or black *ma k oh the surface of the film, which cannot be washed away by the chemical. In this event, the black marks appearing on the film, will cause the markings on the'photogra ihic prints to ap- This may be accomplished hy "sribstituting for the carbon or like surface an abrasive surface 5 as shown in Fig. "5. This abrasive surface may be either a piece of emery cloth or like abrasive material inserted in the holder in place o f the carboh sheet, or it may be in the shape or a ffine file. With such a surface, writing on the back of the black paper will press the emulsion of, the film against the "surface {of the "emery o'r file, and, as the emulsion is very bijittle, wherever it contacts with the edges of the file or bther surface, it will chip ofi, leaving the celluloid with'oifl; any coating, so that the marks will appear white on the developed film and will print black on the picture. I V

The overhanging portions or flanges 4 will hold the film normally out of "Contact with the abrasive surrace and prevent jury thereto. V

When an abrasive surface is used, or a transfer which "adheres permanently to the film, the slot or window may be placed at the sideof the camera adjacent the winding spool, as shown in the drawing and the markings eif-ected after. exposure. I When, however, a carbon marking surface is used, it is generally preferable to have the window and bolder l cated at the opposite side of the back 'so that aiter marking the ordinary movement oi the winding spool would bring the carbon coated portion of the film into position tob'e eXposed simultaneouslywith the taking or the picture. It will be obvious tha't by my method, the film may be marked anally suitable for decloth a method bi forming a signature or other mark or designation on a film by exposing a portion of the back of the film through openings formed by displacing with a stylus certain lines or areas 01 a carbon coated surface. I hereby disclaim the disclosure of this patent as my invention relates not to a light printing methodo'f applying a signature or designating mark to a film but pertains to ineclrai'iically operated means for making an impression "on a sensitive surface of a film, which will produce "a desired mark on'the developed negative and which is ,not in any way dependent upon the use of light for its resultant eiiect.

What I claim is 1. A film camera having an opening through which a stylus may be inserted into contact with the film backing, a holder in line with said opening, said holderhaving a flat surface and overture'd side edges,

afsheet of material designed to act on the.

film and having its margins held by said overtured edges of the holder, "said edges also normally holding the film spaced from said sheet, and projections at the ends of the holder securing it to the back of the camera.

2. A' film camera having an opening through which a stylus may be inserte into contact with the film backing, and a holder for a "sheet of abrasive material, said at holder having a fiat surface and overtured side edges, a L sheet of abrasive material having its side margins held under said overturned edges of the holder, said edges also normally holding the film spaced from said abrasive sheet, and integral projections at the ends of the holder for securing it to the back 'of the camera. v

In testimony whereof, I affix my signature in presenceofitwo witnesses. p V t 1 H v, ALEXANDER S. SPIEGEL.

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hii'r'iirun M. JOHNSON.

ca ies a: this patent may he ohtaiild for five teats shitt amassing the Commissioner of I atents;

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